- All sections
- F - Mechanical engineering; lighting; heating; weapons; blasting
- F16J - Pistons; cylinders; pressure vessels in general; sealings
- F16J 9/16 - Joint-closures obtained by stacking of rings
Patent holdings for IPC class F16J 9/16
Total number of patents in this class: 63
10-year publication summary
|
3
|
5
|
3
|
3
|
13
|
7
|
4
|
6
|
4
|
1
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Mainspring Energy, Inc. | 98 |
12 |
| Kabushiki Kaisha Riken | 265 |
7 |
| ArmWest, LLC | 31 |
6 |
| Burckhardt Compression AG | 116 |
6 |
| General Electric Company | 18133 |
2 |
| Denso Corporation | 23338 |
2 |
| Acd, LLC | 21 |
2 |
| EtaGen, Inc. | 27 |
2 |
| Hitachi Industrial Equipment Systems Co., Ltd. | 1334 |
2 |
| Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.) | 2865 |
2 |
| TPR Co., Ltd. | 141 |
2 |
| Toyota Motor Corporation | 28582 |
1 |
| Mitsubishi Heavy Industries, Ltd. | 8217 |
1 |
| Caterpillar Inc. | 8877 |
1 |
| Hamilton Sundstrand Corporation | 4525 |
1 |
| Ariel Corporation | 10 |
1 |
| Bando Kiko Co., Ltd. | 73 |
1 |
| Bumach Engineering International B.V. | 28 |
1 |
| Cross Manufacturing Company (1938) Limited | 28 |
1 |
| Federal-Mogul Burscheid GmbH | 284 |
1 |
| Other owners | 9 |